How to make acrylic/plastic effect with shader?
Final

A little bit exaggerated to show the effect.



Material

I've used only Principled BSDF shader. Most important thing is to use Rough material (1.0) with Clearcoat. You can manipulate how much reflection will be visible by changing Clearcoat value and/or change Clearcoat roughness also. 



Lightning

I've used really simple setup without much of a thought for this example. 4 Area Lamps with different size, strength and Blackbody value (color).